<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .father {
            width: 200px;
            height: 200px;
            background-color: pink;
            margin-top: 20px;
        }

        .son {
            width: 100px;
            height: 100px;
            background-color: skyblue;
        }
    </style>
</head>
<body>
<div id="app">
    <h3>v-model修饰符 .trim .number</h3>
    姓名：<input v-model.trim="username" type="text"><br>
    年纪：<input v-model.number="age" type="text"><br>


    <h3>@事件名.stop → 阻止冒泡</h3>
    <div @click="fatherFn" class="father">
        <div @click.stop="sonFn" class="son">儿子</div>
    </div>

    <h3>@事件名.prevent → 阻止默认行为</h3>
    <a @click.prevent href="http://www.baidu.com">阻止默认行为</a>
</div>
<script src="./vue.js"></script>
<script>
    const app = new Vue({
        el: '#app',
        data: {
            username: '',
            age: '',
        },
        methods: {
            fatherFn() {
                alert('老父亲被点击了')
            },
            sonFn(e) {
                // e.stopPropagation() // 自己实现事件冒泡
                alert('儿子被点击了')
            }
        }
    })
</script>
</body>
</html>